Psst, ever heard of a concept called as "a straight couple"?
I think that's a myth, but some people say that's the proof you might be looking for
I was talking about how some people think that a gay couple will always have someone who has the 'male' role and another who has a 'female' role.
This situation illustrated the absurdity of applying this by having the coworker think they were a gay couple and assuming that wako is the 'man' in the relationship, when meguru, an actual man, is assumed to take a 'female' role.
Since straightifying is so ineffective, you shouldn't assume there there are men in a lesbian relationships.